This week, we’ll post the last two first-round head-to-heads. Next week we’ll start pitting our winners against each other. Only a few more weeks until we crown a final champ!

For those of you just joining our game, each round we’ve posted two entries from this year’s Audubon Magazine Photo Awards. More than 1,000 of you have chosen our six winners so far. The ultimate victor of Bird Madness will appear on our website, along with a story about how he or she captured the shot. Our Jan-Feb 2012 issue will feature the awards’ official winners, selected by our panel of judges.

Vote here! Voting for this matchup will close on Wednesday, Dec. 14 at 11:59 eastern time. The next round starts on Thursday.